Configure Write-through for Write-behind Cache Operations
If the Write-behind option is enabled, then all of the data source operations are queued up and performed in the background. There are multiple settings, which can be used to optimize the Write-through provider to fulfill the user requirements for a Write-behind cache.
Important
For .NET, before deploying your .dll files, ensure you have the appropriate .NET Version installed as discussed in the NCache Installation Guide.
Using the NCache Management Center
Launch the NCache Management Center by browsing to http://localhost:8251 or
<server-ip>:8251on Windows and Linux.In the left navigation bar, click on Clustered Caches or Local Caches, based on the cache to which the backing source will be configured. Against the cache name, click on View Details.
Make sure that the cache is stopped.
This opens up the detailed configuration page for the cache. Go to the Advanced Settings tab and click on Backing Source in the left bar.
Configure a Write-through provider as explained in Configuring Write-through Provider.
Once here, you can change or specify the values as per your application requirement(s).
Select the Enable Batching checkbox to perform all Write-behind operations on the data source in bulk/batches. You can also configure the Batch-interval(s) and Operation-delay(ms) for the batching mode.
Change the value for Operations per second, to control how many Write-behind operations will be performed on the data source in a second.
You can also configure the Failed operations queue limit. This queue is used to re-queue the failed operations and will be retried on the data source.
The Failed operations eviction ratio specifies the eviction ratio percentage to evict the most retried operations when the queue is full.
Once you have added the Write-through provider, deploy the provider through the Deploy Backing Source Providers which requires the assemblies to be deployed over NCache.
- After applying all the changes, click on Save Changes.
Using Command Line Tools
You can also use the Command Line Tools to configure Write-through, as discussed below.
Configure Write-behind
The Add BackingSource cmdlet enables users to configure backing source (Write-through) provider for the specified cache. The following command configures Writer1 as a Write-through provider on demoCache with Write-behind enabled.
Add-BackingSource -CacheName demoCache -AssemblyPath C:\Providers.dll -Class WriteThru.Writer -ProviderName Writer1 -WriteThru -IsBatching
Remove Write-behind
The Remove BackingSource cmdlet removes the pre-configured backing source providers (Write-through) from the cache or a specified server. The following command removes the pre-configured Write-behind provider named Writer1 from demoCache.
See Also
Read-Through Provider
Write-through Provider
Deploy Providers
Add Test Data
